Mean of 50 observations was found to be 80.4
Asked by admin @ in Math viewed by 289 People
Mean of 50 observations was found to be 80.4 but later on, it was discovered that 96 was misread as 69 at one place. Find correct mean
SUPER URGENT!!!!
Answered by admin @
Sum of all 50 observations = mean * no of observation = 80.4x 50 = 4020 now according to question 96 was misread by 69
So the new sum of observation = 4020 - 69 + 96 = 4020 + 27 = 40.47 now new mean = 4047/50 = 80.94 answer
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